Donald E. Johnston

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Ellisville, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Fuse with improved spring timer
- Patent number 4,992,770
- Issue date Feb 12, 1991
- Cooper Industries, Inc.
- Keith A. Spalding
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electric protective device and method for manufacturing same
- Patent number 4,771,259
- Issue date Sep 13, 1988
- Cooper Industries, Inc.
- Aldino J. Gaia
- H01 - BASIC ELECTRIC ELEMENTS